Nepean Bay Weather Forecast

    • 8
    • 19

    Cloudy

    • 8
    • 15

    Cloudy

    • 7
    • 16

    Cloudy

    • 6
    • 16

    Cloud clearing

    • 6
    • 21

    Sunny

    • 9
    • 23

    Sunny

    • 11
    • 18

    Cloudy

Today 14 Sep Kangaroo Island

Cloudy. Medium chance of showers, most likely in the evening. Winds westerly 15 to 25 km/h tending southwesterly 20 to 30 km/h in the evening. Overnight temperatures falling to around 10 with daytime temperatures reaching around 18.

Investigator Strait Coastal Waters

Wind
Westerly 10 to 15 knots turning southwesterly in the late evening. Winds reaching up to 20 knots inshore in the late evening.
Seas
Around 1 metre.
1st Swell
West to southwesterly around 1 metre, increasing to 1 to 1.5 metres during the morning.
Weather
Cloudy.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Nepean Bay Temperature Statistics View More

September Temperature

Kingscote Airport (7km)

  • Lowest 8 September, 2026

    1.9 °C

  • Average September

    12.4 °C

  • Highest 1 September, 2026

    21.3 °C

Climate (2021–2026)

Kingscote Airport (7km)

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  • Average Low 2021–2026

    9.3 °C

  • Average 2021–2026

    14.8 °C

  • Average High 2021–2026

    21.1 °C
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